author | truebrain |
Fri, 18 Jul 2008 10:15:16 +0000 | |
branch | noai |
changeset 11168 | 3842648184cd |
parent 10776 | 07203fc29812 |
permissions | -rw-r--r-- |
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/* $Id$ */ |
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/** @file road.cpp Generic road related functions. */ |
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#include "stdafx.h" |
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#include "openttd.h" |
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#include "rail_map.h" |
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#include "road_map.h" |
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#include "road_internal.h" |
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#include "water_map.h" |
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#include "genworld.h" |
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#include "player_func.h" |
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#include "player_base.h" |
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#include "engine_func.h" |
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#include "engine_base.h" |
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#include "settings_type.h" |
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#include "date_func.h" |
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bool IsPossibleCrossing(const TileIndex tile, Axis ax) |
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{ |
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return (IsTileType(tile, MP_RAILWAY) && |
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!HasSignals(tile) && |
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GetTrackBits(tile) == (ax == AXIS_X ? TRACK_BIT_Y : TRACK_BIT_X) && |
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GetTileSlope(tile, NULL) == SLOPE_FLAT); |
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} |
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RoadBits CleanUpRoadBits(const TileIndex tile, RoadBits org_rb) |
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{ |
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for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) { |
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const TileIndex neighbor_tile = TileAddByDiagDir(tile, dir); |
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/* Get the Roadbit pointing to the neighbor_tile */ |
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const RoadBits target_rb = DiagDirToRoadBits(dir); |
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/* If the roadbit is in the current plan */ |
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if (org_rb & target_rb) { |
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bool connective = false; |
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const RoadBits mirrored_rb = MirrorRoadBits(target_rb); |
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switch (GetTileType(neighbor_tile)) { |
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/* Allways connective ones */ |
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case MP_CLEAR: case MP_TREES: |
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connective = true; |
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break; |
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/* The conditionaly connective ones */ |
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case MP_TUNNELBRIDGE: |
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case MP_STATION: |
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case MP_ROAD: { |
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const RoadBits neighbor_rb = GetAnyRoadBits(neighbor_tile, ROADTYPE_ROAD) | GetAnyRoadBits(neighbor_tile, ROADTYPE_TRAM); |
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/* Accept only connective tiles */ |
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connective = (neighbor_rb & mirrored_rb) || // Neighbor has got the fitting RoadBit |
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CountBits(neighbor_rb) == 1; // Neighbor has got only one Roadbit |
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} break; |
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case MP_RAILWAY: |
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connective = IsPossibleCrossing(neighbor_tile, DiagDirToAxis(dir)); |
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break; |
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case MP_WATER: |
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/* Check for real water tile */ |
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connective = !IsWater(neighbor_tile); |
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break; |
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/* The defentetly not connective ones */ |
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default: break; |
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} |
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/* If the neighbor tile is inconnective remove the planed road connection to it */ |
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if (!connective) org_rb ^= target_rb; |
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} |
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} |
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return org_rb; |
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} |
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bool HasRoadTypesAvail(const PlayerID p, const RoadTypes rts) |
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{ |
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RoadTypes avail_roadtypes; |
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if (p == OWNER_TOWN || _game_mode == GM_EDITOR || IsGeneratingWorld()) { |
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avail_roadtypes = ROADTYPES_ROAD; |
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} else { |
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if (!IsValidPlayer(p)) return false; |
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avail_roadtypes = (RoadTypes)GetPlayer(p)->avail_roadtypes | ROADTYPES_ROAD; // road is available for always for everybody |
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} |
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return (rts & ~avail_roadtypes) == 0; |
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} |
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bool ValParamRoadType(const RoadType rt) |
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{ |
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return HasRoadTypesAvail(_current_player, RoadTypeToRoadTypes(rt)); |
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} |
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RoadTypes GetPlayerRoadtypes(PlayerID p) |
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{ |
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RoadTypes rt = ROADTYPES_NONE; |
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Engine *e; |
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FOR_ALL_ENGINES_OF_TYPE(e, VEH_ROAD) { |
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const EngineInfo *ei = &e->info; |
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if (HasBit(ei->climates, _settings_game.game_creation.landscape) && |
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(HasBit(e->player_avail, p) || _date >= e->intro_date + 365)) { |
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SetBit(rt, HasBit(ei->misc_flags, EF_ROAD_TRAM) ? ROADTYPE_TRAM : ROADTYPE_ROAD); |
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} |
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} |
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return rt; |
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} |